Dual neutron flux/temperature measurement sensor

Title: Dual neutron flux/temperature measurement sensor

Full Record
Other Related Research

Abstract

Simultaneous measurement of neutron flux and temperature is provided by a single sensor which includes a phosphor mixture having two principal constituents. The first constituent is a neutron sensitive 6LiF and the second is a rare-earth activated Y203 thermophosphor. The mixture is coated on the end of a fiber optic, while the opposite end of the fiber optic is coupled to a light detector. The detected light scintillations are quantified for neutron flux determination, and the decay is measured for temperature determination.

Inventors:

Mihalczo, John T ^[1]; Simpson, Marc L ^[2]; McElhaney, Stephanie A ^[1]

Oak Ridge, TN
Knoxville, TN

Issue Date:: 1994-01-01

Research Org.:: LOCKHEED MARTIN ENRGY SYST INC

OSTI Identifier:: 869524

Patent Number(s):: 5352040

Assignee:: Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)

DOE Contract Number:: AC05-84OR21400

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: dual; neutron; flux; temperature; measurement; sensor; simultaneous; provided; single; phosphor; mixture; principal; constituents; constituent; sensitive; 6lif; rare-earth; activated; y203; thermophosphor; coated; fiber; optic; opposite; coupled; light; detector; detected; scintillations; quantified; determination; decay; measured; simultaneous measurement; fiber optic; neutron flux; temperature measurement; light detector; neutron sensitive; temperature determination; single sensor; detected light; flux determination; temperature measure; phosphor mixture; /374/250/252/

Citation Formats


                    Mihalczo, John T, Simpson, Marc L, and McElhaney, Stephanie A. Dual neutron flux/temperature measurement sensor.  United States: N. p., 1994. 
        Web.

Copy to clipboard


                    Mihalczo, John T, Simpson, Marc L, & McElhaney, Stephanie A. Dual neutron flux/temperature measurement sensor.  United States.

Copy to clipboard


                    Mihalczo, John T, Simpson, Marc L, and McElhaney, Stephanie A. Sat .  
        "Dual neutron flux/temperature measurement sensor".  United States.  https://www.osti.gov/servlets/purl/869524.

Copy to clipboard


                    
@article{osti_869524,

  title        = {Dual neutron flux/temperature measurement sensor},

  author       = {Mihalczo, John T and Simpson, Marc L and McElhaney, Stephanie A},

  abstractNote = {Simultaneous measurement of neutron flux and temperature is provided by a single sensor which includes a phosphor mixture having two principal constituents. The first constituent is a neutron sensitive 6LiF and the second is a rare-earth activated Y203 thermophosphor. The mixture is coated on the end of a fiber optic, while the opposite end of the fiber optic is coupled to a light detector. The detected light scintillations are quantified for neutron flux determination, and the decay is measured for temperature determination.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1994},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Dual-stage trapped-flux magnet cryostat for measurements at high magnetic fields

Patent Islam, Zahirul; Das, Ritesh K.; Weinstein, Roy

A method and a dual-stage trapped-flux magnet cryostat apparatus are provided for implementing enhanced measurements at high magnetic fields. The dual-stage trapped-flux magnet cryostat system includes a trapped-flux magnet (TFM). A sample, for example, a single crystal, is adjustably positioned proximate to the surface of the TFM, using a translation stage such that the distance between the sample and the surface is selectively adjusted. A cryostat is provided with a first separate thermal stage provided for cooling the TFM and with a second separate thermal stage provided for cooling sample.
Full Text Available
Temperature measurement method using temperature coefficient timing for resistive or capacitive sensors

Patent Britton, Jr., Charles L. (Alcoa, TN); Ericson, M Nance [Knoxville, TN]

A method and apparatus for temperature measurement especially suited for low cost, low power, moderate accuracy implementation. It uses a sensor whose resistance varies in a known manner, either linearly or nonlinearly, with temperature, and produces a digital output which is proportional to the temperature of the sensor. The method is based on performing a zero-crossing time measurement of a step input signal that is double differentiated using two differentiators functioning as respective first and second time constants; one temperature stable, and the other varying with the sensor temperature.
Full Text Available
Multifunctional potentiometric gas sensor array with an integrated temperature control and temperature sensors

Patent Blackburn, Bryan M; Wachsman, Eric D

Embodiments of the subject invention relate to a gas sensor and method for sensing one or more gases. An embodiment incorporates an array of sensing electrodes maintained at similar or different temperatures, such that the sensitivity and species selectivity of the device can be fine tuned between different pairs of sensing electrodes. A specific embodiment pertains to a gas sensor array for monitoring combustion exhausts and/or chemical reaction byproducts. An embodiment of the subject device related to this invention operates at high temperatures and can withstand harsh chemical environments. Embodiments of the device are made on a single substrate. Themore »« less
Full Text Available
Non-contact passive temperature measuring system and method of operation using micro-mechanical sensors

Patent Thundat, Thomas G [616 Plainfield Rd., Knoxville, TN 37923]; Oden, Patrick I [804-171 Olde Pioneer Trail, Knoxville, TN 37923]; Datskos, Panagiotis G [8444 Mecklenburg Ct., Knoxville, TN 37923]

A non-contact infrared thermometer measures target temperatures remotely without requiring the ratio of the target size to the target distance to the thermometer. A collection means collects and focusses target IR radiation on an IR detector. The detector measures thermal energy of the target over a spectrum using micromechanical sensors. A processor means calculates the collected thermal energy in at least two different spectral regions using a first algorithm in program form and further calculates the ratio of the thermal energy in the at least two different spectral regions to obtain the target temperature independent of the target size, distancemore »« less
Full Text Available
Method for measuring dose-equivalent in a neutron flux with an unknown energy spectra and means for carrying out that method

Patent Distenfeld, Carl H [Mattituck, NY]

A method for measuring the dose-equivalent for exposure to an unknown and/or time varing neutron flux which comprises simultaneously exposing a plurality of neutron detecting elements of different types to a neutron flux and combining the measured responses of the various detecting elements by means of a function, whose value is an approximate measure of the dose-equivalent, which is substantially independent of the energy spectra of the flux. Also, a personnel neutron dosimeter, which is useful in carrying out the above method, comprising a plurality of various neutron detecting elements in a single housing suitable for personnel to wear whilemore » working in a radiation area.« less
Full Text Available

Similar Records